Guides
Underwear, explained properly
Most underwear advice is a product list with adjectives attached. These guides answer the question first, show the trade-offs in a table, and say plainly where the evidence runs out — including for our own product, which is still in development.
Start here
- Underwear that rides up is a mechanical problem: the leg hem sits above the widest part of your thigh.
- Chafing needs friction, moisture and time — removing any one of the three stops it.
- Fine synthetic knits dry fast and hold their fit; cotton is more comfortable dry and worse once you sweat.
- Underwear sizes are body measurements, so a tape measure beats your trouser size every time.
- The number of pairs you need is set by your laundry cycle: days between washes, plus gym days, plus two.
Every guide
Comparisons
Which cut, which fabric, and what the differences actually change.
- What are boxer briefs?A boxer brief is a close-fitting brief with a leg. What separates it from boxers, briefs and trunks, when it was invented, who it suits, and how to tell a good one.
- Boxer briefs vs trunks vs briefs: which cut actually suits youThe real differences between boxer briefs, trunks and briefs — leg length, rise and coverage — and which cut fixes riding up, bunching or visible lines.
- Boxers vs briefs: the honest comparisonThe two classic cuts compared on what actually differs — support, coverage, bulk under clothes and heat — plus a straight answer on the health question.
Problem solving
Riding up, chafing, bunching — what causes it and what fixes it.
- Why your underwear rides up, and what actually stops itRiding up is mechanical, not bad luck. The four causes — leg length, fabric recovery, hem type and fit through the seat — plus how to tell which one is yours.
- How to stop underwear chafingChafing needs friction, moisture and time — remove one and it stops. What to change in your underwear, and when to see a doctor instead.
Fabric & construction
What the materials do, in plain language, with the trade-offs.
- What the AIRism label actually says — the benchmark we build againstWe transcribed the labels of two UNIQLO AIRism low-rise boxer briefs bought in Vietnam. The composition differs by colourway — here is every field.
- What is the best material for men's underwear?Cotton, modal, bamboo, merino, polyester, nylon and silk compared on moisture, odour, durability and cost — including what the word ‘bamboo’ on a label usually means.
- Is polyester underwear bad for you? A straight answer from a brand that uses itWhat the evidence actually supports about polyester underwear, what it doesn’t, and where the real trade-offs are — written by a brand whose own product is a polyester blend.
- Microfibre vs cotton underwear: what each one actually gives upMicrofibre moves moisture and dries fast but holds odour; cotton feels better dry and worse wet. A straight comparison, including the health question.
- Moisture-wicking underwear: what the word actually meansWicking is a mechanical property, not a treatment. How it works, how to tell a real claim from marketing, and what to wear when you sweat.
- Seamless underwear: what it means, and what it doesn’tMost “seamless” underwear has seams. What the word covers — bonded, flatlock, knitted in the round — and which construction solves visible lines or rubbing.
Fit & sizing
Measuring, choosing between sizes, and what a close fit should feel like.
- No-fly boxer briefs: why the opening disappeared, and who should careWhy many boxer briefs now come without a fly, what you give up, what you gain in comfort and bulk, and how men actually use the bathroom in them.
- Men’s underwear size guide: how to measure, and why brands disagreeHow to measure your waist for underwear, why the same size fits differently across brands, and how to decide when you fall between two sizes.
- Low-rise underwear: what rise means, and who it suitsRise is where the waistband sits, not how tight it is. How to measure it, how low-rise differs from regular, and when it's the wrong choice.
Care & ownership
How many pairs, how long they last, how to wash them.
- What actually makes men’s underwear worth paying more forWhere the money goes in a pair of underwear, which upgrades you can feel, which ones you cannot, and how to judge a pair before you buy five of them.
- How many pairs of underwear should a man own?The number is set by how often you do laundry, not by taste. The arithmetic, a table by wash frequency, and when to throw a pair out.
Travel
Packing light without wearing something you regret at hour fourteen.